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vfio/spapr: Relax the IOMMU compatibility check 

We are going to have multiple different types of PHB on the same system
with POWER8 + NVLink and PHBs will have different IOMMU ops. However
we only really care about one callback - create_table - so we can
relax the compatibility check here.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Alexey Kardashevskiy 2016-04-29 18:55:15 +10:00 committed by Michael Ellerman
parent c8ceacc22b
commit 54de285beb
1 changed files with 2 additions and 1 deletions
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3
drivers/vfio/vfio_iommu_spapr_tce.c
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@ -1188,7 +1188,8 @@ static int tce_iommu_attach_group(void *iommu_data,
goto unlock_exit;
}
table_group_tmp = iommu_group_get_iommudata(tcegrp->grp);
if (table_group_tmp->ops != table_group->ops) {
if (table_group_tmp->ops->create_table !=
table_group->ops->create_table) {
pr_warn("tce_vfio: Group %d is incompatible with group %d\n",
iommu_group_id(iommu_group),
iommu_group_id(tcegrp->grp));